The thing I don't like about gunshows is that dealers will make low ball offers to private sellers before the show. Then, they'll put it on their table with a huge mark up or sell it at another show. That left a bad taste with me. I understand, capitalism in action. If the buyer and seller are happy with the transaction then, great!
That being said, if I'm selling my stuff, I'm not selling to dealer with a low ball offer just for them to make a profit off of me. If there's a profit to be made, it's going to be me, not them.
If a dealer is going to low ball me, especially if they won't work with me on something they have that I desire, I tell them I want retail for my stuff. Now, if a collector or noob is willing to haggle, I'll give them a screaming deal. Or I'll go home with my stuff.
But since I don't/won't go to gunshows, and I don't want to part with any more of my milsurps, it doesn't matter.
Like I always say; Gun guys are socialists when we want to buy and capitalists when we want to sell.